{"id":8075,"date":"2024-02-23T07:43:02","date_gmt":"2024-02-23T02:13:02","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=8075"},"modified":"2024-02-23T15:57:05","modified_gmt":"2024-02-23T10:27:05","slug":"acids-bases-salts-icse-solutions-class-10-chemistry","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/acids-bases-salts-icse-solutions-class-10-chemistry\/","title":{"rendered":"ICSE Solutions for Class 10 Chemistry – Acids, Bases and Salts"},"content":{"rendered":"

ICSE Solutions for Class 10 Chemistry –\u00a0<\/span>Acids<\/a>, Bases<\/a> and Salts<\/a><\/span><\/h2>\n

ICSE Solutions<\/a>Selina ICSE Solutions<\/a><\/p>\n

APlusTopper.com provides ICSE Solutions for Class 10 Chemistry Chapter 3 Acids, Bases and Salts for ICSE Board Examinations. We provide step by step Solutions for ICSE Chemistry Class 10 Solutions Pdf.\u00a0You can download the Class 10 Chemistry ICSE Textbook Solutions with Free PDF download option.<\/p>\n

Download Formulae Handbook For ICSE Class 9 and 10<\/a><\/p>\n

Short Questions<\/span><\/h3>\n

Question 1:<\/strong> Solution A is a strong acid<\/a>, solution B is a weak acid, solution C is a strong alkali<\/a>.
\n(i) Which solution contains solute molecules in addition to water molecules.
\n(ii) Which solution could be a solution of glacial acetic acid ?
\n(iii) Give an example of a solution which is a weak alkali.
\nAnswer:<\/strong> (i) B (ii) B (iii) Ammonium hydroxide<\/p>\n

Question 2:<\/strong> (i) What is basicity of an acid. Give examples.
\n(ii) Give the basicity of nitric acid, acetic acid and phosphoric acid.
\n(iii) State two properties of an acid.
\n(iv) On what factors the strength of an acid depend ?
\n(v) Name an acid used : (a) as a flavour and to preserve food (b) in a drink (c) to remove ink spots (d) as an eye wash.
\nAnswer:<\/strong> (i) The number of replaceable hydrogen atoms, present in one molecule of an acid is known as basicity of the acid. For example hydrochloric acid is a monobasic acid, sulphuric acid is a dibasic acid and phosphoric acid is a tribasic acid.
\n(ii) Nitric acid (HNO3<\/sub>) —> Monobasic
\nAcetic add (CH3<\/sub>COOH) —> Monobasic
\nPhosphoric add (H3<\/sub>PO4<\/sub>) —> Tribasic.
\n(iii) (a) An add turns methyl orange into pink and blue litmus to red.
\n(b) An add with a base forms salt and water only.
\nNaOH + HCl —> NaCl + H2<\/sub>O
\n(alkali) (acid) \u00a0 \u00a0 (Salt) (water)
\n(iv) The strength of an acid depends on the following :
\n(a) Reactivity of the acid. (b) Degree of ionisation to H+<\/sup> ion.
\n(v) (a) Citric add. (b) Carbonic acid.
\n(c) Oxalic add. (d) Boric acid.<\/p>\n

Question 3:<\/strong> (i) What is acidity of a base<\/a>. Give examples.
\n(ii) State three properties of an alkali.
\nAnswer:<\/strong> (i) The number of hydroxyl ions that one molecule of a base gives on dissociation is known as acidity of a base.
\ne.g. The acidity of sodium hydroxide (NaOH) is one, it is a monoacid, the acidity of Ca(OH)2<\/sub> is two, if is a diacid base, Al(OH)3<\/sub> is a triacid base.
\n(ii) An alkali turns :
\n(a) Red litmus blue (b) Phenolphthalein to pink (c) Methyl orange to yellow.<\/p>\n

Question 4:<\/strong> Name the kind of particles present in:
\n(i) Sodium hydroxide solution. (ii) Carbonic acid (iii) Sugar solution.
\nAnswer:<\/strong> (i) Sodium ions and hydroxide ions.
\n(ii) Carbonic add molecules, carbonate ions and hydronium ions.
\n(iii) Sugar molecules and water molecules.<\/p>\n

Question 5:<\/strong> Solution A is a sodium hydroxide solution. Solution B is a weak acid. Solution C is dilute sulphuric add. Which solution will
\n(i) liberate sulphur dioxide from sodium sulphite.
\n(ii) give a white precipitate with zinc sulphate solution.
\n(iii) contain solute molecules and ions ?
\nAnswer:<\/strong> (i) C (ii) A (iii) B<\/p>\n

Question 6:<\/strong> (i) What are indicators<\/a> ?
\n(ii) Name three indicators and their colours in different medium.
\n(iii) What is reaction of neutralization ?
\n(iv) Give two practical application of Neutralization.
\nAnswer:<\/strong> (i) Indicators are complex organic compounds, which are used to distinguish between acidic and alkaline solutions by the abrupt change in their colour, e.g. litmus, methyl orange and phenolpthalein.
\n(ii) The three indicators and their colours in different medium are given below:<\/p>\n\n\n\n\n\n\n
Indicator<\/td>\nColour in acidic solution<\/td>\nColour in alkaline solution<\/td>\n<\/tr>\n
(i) Litmus<\/td>\nRed<\/td>\nBlue<\/td>\n<\/tr>\n
(ii) Methyl orange<\/td>\nRed<\/td>\nYellow<\/td>\n<\/tr>\n
(iii) Phenolphthalein<\/td>\nColourless<\/td>\nPink<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Neutralization is an exothermic reaction, in which an acid reacts with a base to form a salt and water only.
\nNaOH + HNO3<\/sub> —> NaNO3<\/sub> + H2<\/sub>O.
\nBase \u00a0 \u00a0 Acid \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Salt \u00a0 \u00a0water
\nIn the reaction of neutralization, the hydrogen ions of an acid combines with the hydroxyl ions of an alkali to form water, at the same time a salt is formed.
\n(iv) (a) Acidity of soil is reduced by adding slaked lime.
\n(b) Antacid tablets are given to a person suffering from acidity.<\/p>\n

Question 7:<\/strong> (i) Explain pH value<\/a> of a solution.
\n(ii) What is the pH of:
\n(a) Pure water, (b) Milk, and (c) Human blood.
\n(iii) The pH value of three solutions is given below. Which one of them is acidic, neutral and alkaline in nature ?
\n(a) pH = 7, (b) pH = 10 and (c) pH = 3.
\n(iv) What is pH number assigned to a solution ?
\nAnswer:<\/strong> (i) pH value of a solution is the negative logarithm to the base 10 of hydrogen ion concentration expressed in gram-ions per litre.<\/p>\n

pH = log10<\/sub>[H+<\/sup>]<\/strong><\/p>\n